Locatable object suitable for underground use and methods of locating same.,申请号EP19900314046-传众专利搜索

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发明名称	Locatable object suitable for underground use and methods of locating same.
摘要
申请公布号	EP0435585(B1)	申请公布日期	1995.03.08
申请号	EP19900314046	申请日期	1990.12.20
申请人	AT&T CORP.	发明人	DAVIS, DONALD D.;PESTO, WILLIAM STEVE;SCHEPIS, ALBERT J.;TURNER, LOYCE A.
分类号	G01V15/00;G02B6/44;(IPC1-7):G01V3/12	主分类号	G01V15/00
代理机构		代理人
主权项
地址

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